Behind the artificial intelligence tools that have become household names is an army of human workers teaching the bots to be smart. These aren’t the folks who testify before Congress or hype the latest updates on social media. For the most part, they’re gig workers spread across the globe who do seemingly random tasks for subcontractors of subcontractors to the big-name companies that make the news. Marketplace’s Meghan McCarty Carino spoke with features writer Josh Dzieza, who went inside the world of “data annotation” for this week’s New York magazine cover story in collaboration with The Verge. He said the people doing this work often are given little information about who or what it’s for.